Real Estate & Investing
Short Sale Deficiency Estimator
Estimate the balance that could remain owed after a short sale, once selling costs and any junior lien are taken into account.
Calculation inputs
Enter the payoff balances and the expected sale outcome.
Results
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Complete the fields and select Calculate to show results here.
Estimate only. Lender approval and waiver terms are not guaranteed.
About this calculator
This calculator estimates the deficiency balance that could remain after a short sale closes, once selling costs and any junior lien are subtracted from the sale price. It's intended for homeowners and their advisors trying to understand potential remaining liability before agreeing to a short sale.
How the calculation works
- Selling costs = sale price × selling costs %
- Net proceeds = sale price − selling costs
- Deficiency = (mortgage balance + second lien) − net proceeds
Notes and assumptions
Some lenders waive the deficiency as part of approving the short sale, while others reserve the right to pursue it.
A junior lienholder may need to be paid separately before releasing its claim on the title.
How it works in plain English
The calculator applies a selling cost percentage to the estimated sale price to approximate commissions, closing costs, and similar fees, arriving at net proceeds. It then adds together the primary mortgage balance and any second lien balance to find the total amount owed across all liens on the property.
The deficiency is the total amount owed minus the net proceeds from the sale. If net proceeds are equal to or greater than the total owed, there is no deficiency and the sale fully satisfies the debt.
The tool also expresses the deficiency as a share of total debt, which can help frame how large the shortfall is relative to what was owed. Whether a lender pursues the deficiency, waives it, or settles for a reduced amount depends on the lender's own policies and any agreement reached as part of approving the short sale.
The formula
- Selling costs = sale price x selling costs %
- Net proceeds = sale price - selling costs
- Deficiency = (mortgage balance + second lien) - net proceeds
Worked example
A homeowner owes $245,000 on their primary mortgage with no second lien, and the home is expected to sell for $210,000. At 8% selling costs, that's $16,800, leaving net proceeds of $193,200.
The deficiency is $245,000 minus $193,200, which equals $51,800, or about 21.1% of the total debt owed. Whether the lender pursues that $51,800 shortfall, waives it, or negotiates a settlement depends on the specific terms of the short sale approval. If the lender agrees to waive the deficiency as part of approving the short sale, the homeowner would owe nothing further despite the shortfall. If instead the lender pursues a settlement, a common outcome is a negotiated lump sum or promissory note for a fraction of that amount rather than the full balance.
Frequently asked questions
Will the lender always pursue the deficiency balance?
Not necessarily. Some lenders waive the deficiency entirely as a condition of approving the short sale, while others reserve the right to pursue collection or a settlement afterward. State law and the specific loan agreement both play a role, so the approval letter should be reviewed carefully.
How does a second lien affect the deficiency?
A second lien, such as a home equity loan, adds to the total amount owed against the property and is not automatically paid off by a short sale unless separately negotiated. The junior lienholder often needs to agree to release its claim, sometimes for a negotiated partial payment.
Can a short sale deficiency affect my taxes?
Forgiven mortgage debt can sometimes be treated as taxable income, though exceptions have historically applied to certain principal residence situations. Tax treatment depends on current law and individual circumstances, so this calculator does not estimate tax impact and a tax professional should be consulted.
What selling cost percentage should I use?
Eight percent is a commonly used placeholder covering real estate commissions plus typical closing costs, but actual costs vary by location and negotiated commission rates. Check with whoever is handling the sale for a more precise estimate specific to the transaction.
Does this estimate account for lender-required contributions from the seller?
No. Some short sale approvals require the seller to contribute cash or sign a promissory note toward the shortfall as a condition of approval. This calculator only estimates the raw deficiency from the numbers entered and does not model specific lender requirements or negotiated terms.
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